<template>
    <div>
      <!-- 顶部滑动条区域 -->
        <div id="slider" class="mui-slider">
          <div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
            <div class="mui-scroll">
              <a :class="['mui-control-item',item.id === 0 ? 'mui-active' : '']" v-for="item in cates" :key="item.id" @tap="getimages(item.id)">
                {{ item.title }}
              </a>
            </div>
          </div>
			</div>
      <!-- 图片区域 -->
      <ul class="photo-list">
        <router-link v-for="item in list" :key="item.id" :to="'/home/photoinfo/' + item.id" tag="li">
          <img v-lazy="item.img_url">
          <div class="info">
            <div class="title">{{ item.title }}</div>
            <div class="zhaiyao">{{ item.zhaiyao }}</div>
          </div>
        </router-link>
      </ul>
    </div>
</template>

<script>
//导入 mui 的js 文件
import mui from '../../lib/mui/js/mui.min.js'
import { Toast } from 'mint-ui'
export default {
      data(){
        return{
          cates:[],//所有分类列表数组
          list:[]//获取所有图片
        };
      },
      created(){
        this.getimgcategory(),
        this.getimages(0)
      },
      mounted(){
        // 当组件中的DOM结构被渲染好并放到页面中，会执行这个钩子
        // 如果要操作元素了，最好在 mounted 里面，因为这个时候的 DOM 元素 是最新的
        // 初始化滑块控件
        mui('.mui-scroll-wrapper').scroll({
          deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
        });
      },
      methods:{
        getimgcategory(){
          this.$http.get("http://www.liulongbin.top:3005/api/getimgcategory").then(result=>{
            if(result.body.status === 0){
                result.body.message.unshift({title:"全部",id:0});
                this.cates = result.body.message;
            }else{
              Toast("加载失败！")
            }
          })
        },
        getimages(id){
          this.$http.get("http://www.liulongbin.top:3005/api/getimages/"+id).then(result=>{
            if(result.body.status === 0){
              this.list = result.body.message;
            }else{
              Toast("获取失败！")
            }
          })
        }
      }
  };
</script>

<style lang="scss" scoped>
* { touch-action: pan-y; } 
.photo-list{
  margin: 0;
  padding: 10px;
  padding-bottom: 0;
  list-style: none;
  li{
    background-color: #ccc;
    text-align: center;
    margin-bottom: 10px;
    box-shadow: 0 0 9px #999;
    position: relative;
    img{
      width: 100%;
      vertical-align: middle;
    }

    .info{
      color: white;
      opacity: 0.7;
      text-align: left;
      position: absolute;
      bottom: 0;
      background-color: rgba(0,0,0,0.4);
      max-height: 84px;
      .title{
        font-size: 14px;  
      }

      .zhaiyao{
        font-size: 12px;
      }
    }

    img[lazy=loading] {
      width: 40px;
      height: 300px;
      margin: auto;
    }
  }
}

</style>
